(;AW[ps]AW[pr]AW[pq]AW[pp]AW[ns]AW[or]AW[oq]AW[np]AW[no]AB[nr]AB[nq]AB[ms]AB[lq]AB[mp]AB[mo]AB[ko]AB[jo]AB[jq]AB[jr]C[Simple problem. Don't think too hard or you'll miss it =P]AP[goproblems]
(;W[mr]
(;B[os]C[]
(;W[ls]
(;B[mq];W[ns]C[RIGHT])
(;B[lr];W[ns]C[RIGHT])
(;B[ns]C[];W[mq]C[There you go!RIGHT]))
(;W[lr];B[mq]
(;W[ns]C[Just ko])
(;W[ls];B[ns])))
(;B[lr];W[ls]C[RIGHT])
(;B[ls]
(;W[lr];B[ks]
(;W[kr];B[os])
(;W[mq]C[RIGHT]))
(;W[mq];B[lr]C[RIGHT])))
(;W[ls];B[mr];W[lr];B[mq])
(;W[lr];B[mr];W[ls];B[mq])
(;W[os];B[mr]C[You saved your stone... And so did Black!]))